Thanks for the compliments!
Concerning your questions:
>- how do you select the parameter row ? I suspect selecting it also select the correct screen but I do not see how to do it.
Right, you select the screen using the keys, then you can adjust up to six parameters using the dials. Some keys have more pages (like rotor->horn->bass), you press the key repeatly to toggle between the screens. Also, some few used functions you can access by pressing the key long (written in red on the panel).
Its very intuitive and easier as it sounds here
>- what are endless potis, encoders without detent or ? are they also push type to allow them to be used for switch parameter on/off ,
No, these are real potentiometers, to be precise: two pots in one case, one is mounted with 90 degrees angle so when reading both pot positions we get the position of the shaft. It has a much smoother feeling and higher resolution as an encoder.
>- what type of ARM (I guess the same range as for your beautifull A16 Mk II), what type of DSP (same as in the Xite) ?
Its a Cortex M3 ARM, the controller software is written completely in C++. We used a different Sharc DSP, but from the same series of DSP's. It's the ADSP-21262.
>- I guess from the screenshot that you add also a compressor to the effect range ... is it based on a known scope device ?
Yes, its a Scope compressor, only few modifications for easier use.
-Juergen